diff --git a/lib/ruby_units/math.rb b/lib/ruby_units/math.rb
index 5eea1838..511e87e0 100644
--- a/lib/ruby_units/math.rb
+++ b/lib/ruby_units/math.rb
@@ -1,4 +1,4 @@
-require 'mathn'
+#require 'mathn'
 
 # Math will convert unit objects to radians and then attempt to use the value for 
 # trigonometric functions.